Mrs Fry told Oxfordshire Coroners’ Court: ‘She was receiving lots of detentions, not for being disruptive in class or misbehaving, but often because she used to take herself out of the classroom to find another where she was able to work.

She said she asked Jenny’s teachers to allow her to take detentions in rooms where she could concentrate, but they wouldn’t listen.

Mrs Fry added: ‘I fully believe Jenny did not intend to take her own life. I think she was frustrated with school.

‘She had not made any suggestions she was thinking of suicide and I believe it was a cry for help.’

Jenna’s body was found near her home in Oxon (Picture: SWNS)

On the day she died, Jenny had texted her friend at 9.36am to tell her she would not be coming to school and also hinted at her intentions but her friend did not have her phone with her.

Coroner Darren Salter said he could not rule out that it was a possible cry for help after seeing the text messages to her friend.

But he added: ‘It can’t be demonstrated to the required standard of proof that it is certain she intended to take her own life.’

The inquest heard there were no medical notes to prove Jenny suffered from EHS.